Tool mounting



' Jan'. 2,2, 11946@- M. D. vZM/1A" 'y 2,393,315,-

TOOL'MOUNTING :Filed Apr-11:14, 1945 man ' l f INVENTOR. MICHAEL D,D2AMA BYE y Patented Jan. 22, 1946 UNITED: STAT Es PATENT oFFlcEj.:

rroot. Mourrrnvd- Y v Michael D. mama, cleveiana, ohiuL Application April 14, 1943, serial No. 483,002

*c claims. (clizia-ci This invention relates to a tool mounting whereby the ytoolfmay befreadily and accurately adjust.- ed'fromV timeto time relative to its support for carrying' out boring .or lother operations.A As showing one application of my improvement in mounting, it is illustrated as adjustably supporting the toolof a boring mill, whereby the tool may be adjusted radially into operating position.

In :an adjustable tool mounting.' for making precision cuts, some clearance must be made between the parts to permitof their assembly and relative adjustment. In' a mounting embodying a large number of parts, the clearances ytherebetween are increased andresult in making it difficult to accuratelyY adjust the tool and rigidlysecure it in the desiredv position to Aresist both ra'- dial and torque stresses. Accordingly, by reducing the'number of parts of Athe mounting to the minimum, the total clearance between the parts is reduced, so that agreater degree of accuracy in-adjustment and a saving of time result.

One object of the invention is to provide an improved tool mounting of simplified construction whereinV one guide member for the tool carrying slide is formed integrally withV the'shank that is supported in theoperating machine or mill.`

Another object of theinvention is to .provide an improved mountingofthis character capable of xedly maintaining the shank of the tool in its adjusted position. f

Other objects of the invention will be apparent .to those skilledin the artto which my invention relates from the following description taken in connection with the accompanying drawing, wherein: y

Fig, 1 isV aside elevation of a mounting embodying my invention, 'with a tool supported therein and'showing the operation ofthe latter for carrying out a boring operation.

Fig. 1a is a section on the line Ia--Ia of Fig. 1. Fig. Zis a section on the lineZ-Zof Fig. 1. Fig. 3 is 'a section on theline y3-.-:i of Fig. 2. Fig. 4 isa section on the line4-4 of Fig. 2. Fig.. 5,is.fa section on the line 5-5 of Fig. 4. Fig. ..6 is a fragmentary. view on the line 6-6 of Fig. 2. ff

In the drawing, l indicates a tail stock of a boring mill arranged to'receive the shank 2 forming part of a mounting for a tool A. The outer end of.' the shank 2 terminates in an integral head 3 having a base portiony 3a the outer wall of which is preferably of curvilinear shape concentric to the axis of ythesh'ank 2.Y The upper portion of l thexlbase portion 3a intermediate its inner and outer ends is cut away or shaped to form a recess 4 extending at right anglesv tothe axis of the Another object of the invention isito provide an improved mounting of this character comprising. fewl parts inter-related to simplify and economize their construction and permitof their ready assembly.

Anotherobject of the inventionvis to provide an i improved tool mounting of this character wherein theadjustment of the part or element which supports the tool shank, may be movedfpredetermined distances vwithout danger of back-lash,

whereby accurate setting of the tool with respect to the work is facilitated. y e

Anotherobject, of theinvention is tolprovide an improved mounting of this characterV having a movableV supporting member for the tool shank and guide walls therefor, certain" of the guide walls being adapted to be exed to increase friction between itrand the supporting member.

Another object of the inventionV isi-to provide an improved tool which is of simpliiedconstruc'f tion having few parts4 adapted Tto be readily 'assembledand disassembled, the construction herein shown embodying certain improvements shown and claimed in: my co-pending application Ser.

No. 478,218,1iled March 6, 1943.

shank 2,'to. accommodate a slide member 5, which carries the tool A =as later set forth. The bottom wall 4': o! the recess 4 is disposed in a plane parallel to but at one side of the axis of the shank 2A and the upper ends of the innery and outer side walls 4a, 4a Vof the recess 4 terminate in a plane parallel to .the axis of the shank 2 and bottom wall of Athe recess, but on the opposite side thereof of ,saidv axis, said side walls forming seats for the inner and outer ends of a combined guide and clamping member 6. The outer wall of the member E' is `preferably curvilinear being struck on a.v radius of the axis of the shank 2 equal to the radius Yof the outer wall of the base portion 3a.y V,The bottomwall 4' of the recess 4 is formed withv spaced parallellyv related guide ways 1 exe tending at right angles to the shank 2 and preferably having side walls converging toward the outer wall :of the base portion 3a, yand the outer end. wall 4a'. `of the base .portion 3a isiformed with a transversely extending elongated through opening 8 for a purpose later set forth. The bottom wall ofthe slide member 5 is provided with parallelly spaced keys or ribs `9 having a cross section :complementary to and slidably engaging axis of which cuts the axis of the shank 2, and intermediate its ends the opening Il] is enlarged laterally to form pairs of alined shoulders IIa, Illa' and vertically (as viewed in Fig. 2), so as to extend through the slide member 5, as shown at It', to accommodate a bifurcated member I2. II indicates an adjusting element rotatably supported in the opening IU. The adjusting element I I is formed intermediate its ends` with* an annular recess. Ilz tto i'eeive'the bifurcations of the member I2, the latter being seated in engagement with the side walls of the recess IIa to prevent endwise movement of the element II.

member 5, (a) free movement of the latter is' prevented, (b) sucint torque must be applied to thescrewI-I to overcome -thisffriction in adjist'igithe'suiie'member ,and-(c) danger of the screw being turned short of or beyond the desired position is greatly reduced. The outer portion of portion of the adjusting element II is provided externally with screw threads IIb, which engage screw threads provided on the walls of the adjathe shank 2 and (b) provided with a hollow boss The" pairs of a'liedishoulders IIla,'IIla' overlap the3 opposite sides ofthe 'bifurcate'd Amember I2 for engagement tli'erewithto-"limitr thetI movement of thefslide'nnember "In e'rtherdirection'and are :so spaed'that Ta) `i'whenrthe' aXis': of Y:the tool shank wisjin aiialrelation to"the"axis3 ofv` thei'shank -:(see". Fig." 2) ,fith'e "slid'ef niember 5` isffat the :limit of Fitsmove'ment in `onedi'ecticmgl the' alined shoulrdersg; I a'servingto" stop'; the 'slider rhe'ifnberV` 5 at this xp'os'itionll wh-en moved toward the left :'('as viewed fi'n Fig"5)i'and1(^b,) l`when `the 'slide' member 5iszinovedin'the'fpposite direction: the ealind shoulders Illa? engage "the member'1I2:'"-tolimit such :movement The outer end pfffthef-gide member `Iisl secured"toztheout'erI end v'vall` rda'iat opposite sides of .the :openingrRby countersunk ca'p' :screws :I9: and its rinnerA end is securedto the innerY end wall 'lIaz by' a "countersunk' capscrew I9a havingra' conical Awall fitting a lcon-ical lseat thereinfto insure proper positioning'ofi'the guide'membier is` formed with" a relatively" wide through f'opering .ori Slot? 2 0 :extending at"v right'angles` ito the -aXis of';thes'hanl 'f2,"fthe bottom vWallY 20a-of theY openingbeing normally kparallel tot the guide "wall-"of .theiguide member and intermediatethe sidewalls the opening 2I is enlarged so that in using a cap *screw -to engage the wall 20a, its outer end or vheadgwillnot project beyond the outer wall of theF guide'merber 6.

It'fvvillfbeiiroted-that the screw II is provided withright-hand screw threads, so that by turnin'git cunterclockwisa the slide member may be --fadjuste'd. nfrom'v its normal :position =(Fig. f2) rz'a,-' :1i'a;lly\di?itlieeshankr2.I *Where therserew II Tis provided with 'left-hand escrew ithreads,V it is 'bpe1"atedI clokwise. "Asiw-ill-be understood, thelpitch' of therserewfrthreadsion*theffperating member I I'ihasfa predetermined--relationi to .thefsgraduation's'on its? en'd f face, 3' xivherebyraf predetermined angular nioveIr1erit'--1offthefrrr'enibe'r II Ydetermines a predetermined fadjustment of the slide ern-ember;

The `headf-of 'srew'f 2 Zeisf formed*` iWitha; noncircular nopenix'l'g"adaptedfto takerazlsiiitabletool for-turning it.'v

To" thosefskilld Yin` the fartrtorwllchffmy-:inventieni relatesfmany: 'cliangesf'i-n-r 'constructionan'd Widely: I diiering embodiments "Land applications of fthednventi'onfwil'l ffsuggest themselveswthout departn'gr--from ithe fspiritf and-fsco'pei 'of the einverition. .ci-'My' disclosures fand l the description heiinri-are "purely 'f illustrative vhand f are "not --intendedtto *be rranyf senseilimiting, Wh'atclaimfi's: f

1. ,En-rfa" toolimountin-g; ethefyconibiriaition'- of :a shank jadapted to ytbe suprteda @ina-chine and f'providedr, at-\its' gouter*- end'f\vith?'-anintegral guide Afwallexiteridingratrightfengles:tosaidrshaink, a separate guide wall fixed at its'innerandonter ends; to sa'iclpiirst :mentioned Wallseifel-ide`l member slidablyemountedfbetwen said-wal'ls;=one; Aoffsaid Walls fand "tiret'adja'ceni'sideeoi'saidE s1`i'de'member being providedwithf oomplementaryspaced parallelly related guide devices extending fat' right angles tto g said;V shank,y f saidr'islidef imemberfbeirig formed 'withfan' openingextending longitudinally thereof; nnev 'endi portionfofesaidropening #being provided-with screwgthreads'anf-operating-mem- .bergfbodily supported'iinfsaid lfopening and? provided-atonewend twith' scre'vv' tl'n-eadscv engaging the threads in said opening;Uheffbppositefend of said operating #member having 'i bearing# 1in" fthe Yotherendt:portion-foffsaidiepe-ningranelftliefouter sidefoffrsaidf-slide: member beingx-frormedtwith a 'seatj fori the shank-- aoffzaitool fthe faxis= of 1`which seat; traverses: atplan'e e.intersectingiI the'eaX-is'fof said first mentionedgsl'ianleduring= movement-of saidf-slide-membery and interengaglng devices :be- -tweenonefof-said-wallsandwaidbperatingfmember vj1"orpreventing endwise vmovement-of the latter.; y c

2;. r"In*astoolemounting; the' fcombinatiorr rof r a shankfadapted tobefsuppontedvima machine and provided at its outerfend-"witha^guideiwall extending at right angles to said shank, a separate guide wall fixed at its inner and outer ends to said iirst mentioned wall, a slide member slidably mounted between said guide walls, one of said walls and the adjacent side of said slide member being provided with complementary guide devices spaced in parallel relation and extending at right angles to said shank, said slide member being formed with an opening extending longitudinally thereof, said opening having a laterally extending portion intermediate its ends and one end portion thereof being provided with screw threads, an operating member bodily supported in said opening and formed intermediate its ends with an annular recess, one end of said operating member being provided externally with screw threads engaging the 'threads in said opening and its opposite end having bearing in the other end portion of said opening and the outer side of said slide m'ember being formed with a seat for `the shank of a tool th'e axis of which seat traverses a plane intersecting the axis of said first mentioned shank during movement of said slide member, and a device carried by one of said walls and extending through the lateral portion of said opening into the annular recess in said operating member for engagement with the side walls of said recess to prevent endwise movement of said operating member.

3. In a tool mounting, the combination of a shank adapted to be supported in a machine and provided at its outer end with a guide wall extending at right angles :to said shank, a separate guide wall fixed at its inner and outer ends to said rst mentioned wall, a slide member slidably mounted between said guide walls, one of said walls and the adjacent side of said slide member being provided ywith complementary guide devices spaced in parallel relation and extending at right angles to said shank, said slide member being formed with an opening extending longituinally thereof, which opening is enlarged laterally intermediate its ends to form spaced shoulders and one end portion thereof being provided with screw threads, an operating member mounted in said opening and formed intermediate its ends with an annular recess, one end of said operating member being provided externally with screw threads engaging the threads in said opening, the opposite end of said operating member having bearing in the other end portion of said opening and the outer side of said slide member being formed with a seat for the shank of a tool the axis of which seat traverses a plane intersecting the axis of said first mentioned shank during movement of said slide member, and a device carried by one of said guide walls and disposed between and in engagement with the side walls ofthe annular recess in said operating member to prevent endwise movement of the latter and in the path of movement of said shoulders to limit the movement of said slide member in either direction.

4. In a tool mounting, the combination of a shank adapted to be mounted in a machine and providedat its outer end with an integral base memberfformed with a recess extending at right angles to said shank, the bottom wall of said recess being disposed in a plane parallel to but at one side of the axis of said shank and forming with the end walls of said recess a guide way, a guide member iixed at its inner and outer ends to the end walls of said recess and having a guide surface parallel to the bottom wall of said recess disposed on the opposite side of the axis of said shank, a slide mounted in and slidably engaging the walls of said recess and said guide surface, said slide being formed with an opening extending longitudinally thereof and one endy portion of said ,opening being provided with screw threads, a rotatable device mounted in said opening and provided externally at one end with screw threads engaging the threads in said opening and having bearing in the opposite end portion of said opening, the outer side of said slide being formed with a seat for the shank of a tool, the axis of Vwhich seat traverses a plane cutting the axis of said first mentioned shank during movement of said slide, and interengaging means between one of said members and said device for preventing endwise movement of the latter.

Y5. A mounting as claimed in claim 4 wherein means are provided. for flexing the ywall of said guide member for increasing the friction between its guide surface and said slide.

6. A mounting as claimed in claim 4 wherein said guidemember is formed with a through opening the Vinner face of which is substantially parallel to said guide surface and means are provided for flexing the wall of said guide member Y between said inner face of said through opening and said guide surface for increasing the friction between the latter and said slide.

MICHAEL D. DZAMA. 

